PasswordUtility.cs

using System;

namespace Cetera.Security
{
    /// <summary>
    /// Password utilities.
    /// </summary>
    public static class PasswordUtility
    {
        /// <summary>
        /// Generates the random password.
        /// </summary>
        /// <param name="passwordLength">Length of the password.</param>
        /// <param name="seed">The seed.</param>
        /// <returns></returns>
        /// <remarks>
        /// For more details, see “Generate random password in C#” by Mads Kristensen
        /// [http://madskristensen.net/post/Generate-random-password-in-C]
        /// </remarks>
        public static string GenerateRandomPassword(int passwordLength, int seed)
        {
            var allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789!@$?_-";
            var chars = new char[passwordLength];
            var r = new Random(seed);

            for (int i = 0; i < passwordLength; i++)
            {
                chars[i] = allowedChars[r.Next(0, allowedChars.Length)];
            }

            return new string(chars);
        }
    }
}